✅ cover lib async clear shutdown

src-async/BitLoggerAsync_test.mbt

@@ -1172,6 +1172,32 @@ async test "library async builder unwrap matches direct async builder behavior"
   inspect(full.last_error() == direct.last_error(), content="true")
 }
 
+async test "library async builder shutdown clear abandons pending records through facade" {
+  let logger = build_library_async_logger(
+    AsyncLoggerBuildConfig::new(
+      logger=@bitlogger.LoggerConfig::new(
+        min_level=@bitlogger.Level::Info,
+        target="async.lib.builder.clear",
+        sink=@bitlogger.SinkConfig::new(kind=@bitlogger.SinkKind::Console),
+      ),
+      async_config=AsyncLoggerConfig::new(
+        max_pending=2,
+        overflow=AsyncOverflowPolicy::Blocking,
+      ),
+    ),
+  )
+  let full = logger.to_async_logger()
+
+  logger.info("one")
+  inspect(full.pending_count(), content="1")
+  inspect(full.dropped_count(), content="0")
+  logger.shutdown(clear=true)
+  inspect(full.is_closed(), content="true")
+  inspect(full.is_running(), content="false")
+  inspect(full.pending_count(), content="0")
+  inspect(full.dropped_count(), content="1")
+}
+
 async test "parsed library async logger unwrap keeps async helper surface" {
   let logger = parse_and_build_library_async_logger(
     "{\"logger\":{\"min_level\":\"warn\",\"target\":\"async.lib.config.helpers\",\"sink\":{\"kind\":\"console\"}},\"async_config\":{\"max_pending\":2,\"overflow\":\"DropOldest\",\"max_batch\":1,\"linger_ms\":0,\"flush\":\"Shutdown\"}}",